package cn.jinjie.day05.test6;

public class Test {
	public static void main(String[] args) {
		Demo01.Demo02 demo02 = new Demo01().new Demo02();
		demo02.show();
	}
}

class Demo01{
	public int num=10;
	class Demo02{
		public int num=20;
		public void show(){
			int num=30;
			System.out.println(num);
			System.out.println(this.num);
			System.out.println(Demo01.this.num);
		}
	}
}